Paw Paw Formation | |
---|---|
Stratigraphic range: Late Albian ~ | |
Type | Geological formation |
Unit of | Comanche & Washita Groups |
Lithology | |
Primary | Mudstone |
Location | |
Coordinates | 32°54′N97°18′W / 32.9°N 97.3°W |
Approximate paleocoordinates | 30°12′N59°48′W / 30.2°N 59.8°W |
Region | Texas |
Country | United States |
The Paw Paw Formation is a geological formation in Texas whose strata date back to the late Albian stage of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.
Color key
| Notes Uncertain or tentative taxa are in small text; |
Dinosaurs reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Nodosauridae indet. [1] [2] | Indeterminate | Tarrant County, Texas | Humerus, ilia, scapulocoracoid and specimen representing a baby | Juvenile nodosaurid remains that cannot be compared with Pawpawsaurus due to lack of overlapping elements. Informally referred to as the "Paw Paw Scuteling". [3] | ![]() |
Pawpawsaurus [1] | P. campbelli | Tarrant County, Texas | Complete skull | A nodosaurid | ![]() |
Texasetes [4] | T. pleurohalio | Blue Mound | Partial skeleton | A nodosaurid | ![]() |
Pterosaurs reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Coloborhynchus [5] | C. wadleighi | SMU locality 263 | Jaw elements | Species moved to the genus Uktenadactylus | |
Tapejarinae indet. [6] | Indeterminate | SMU locality 263 | Incomplete right metatarsal | Tapejarid bone with signs of scavenging by fish and sharks | |
Uktenadactylus [5] [7] | U. wadleighi | SMU locality 263 | Jaw elements | An anhanguerid | ![]() |
Turtles reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Testudines indet. [2] | Indeterminate | SMU locality 241 | Remains of a turtle | ||
Bony fish reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Allocyclostoma [8] | A. alienus | Juniper Point locality | 3 otoliths | A beardfish | |
Apateodus [8] | A. sp. | Juniper Point locality | 6 otoliths | An aulopiform | |
Argentina? [8] | A. texana | Juniper Point locality | 49 otoliths | An argentine | |
Elopothrissus [8] | E. pawpawensis | Juniper Point locality | 139 otoliths | A bonefish | |
Genartina [8] | G. princeps | Juniper Point locality | 486 otoliths | A fish of uncertain classification | |
Ichthyodectiformes indet. [2] | Indeterminate | SMU locality 241 | Represents either Saurodon sp. or Saurocephalus sp. | ||
Ichthyotringa [8] | I.? cuneata | Juniper Point locality | 12 otoliths | An aulopiform | |
I. sp. | Juniper Point locality | An otolith | An aulopiform | ||
Paraulopus [8] | P.? wichitae | Juniper Point locality | 6 otoliths | An aulopiform | |
Pteralbula [8] | P. galtina | Juniper Point locality | 7 otoliths | A bonefish | |
Teleostei incertae sedis [8] | Indeterminate | Juniper Point locality | 3 otoliths | Teleost fish remains | |
Texoma [8] | T. cyclogaster | Juniper Point locality | 5 otoliths | A beardfish | |
Cartilaginous fish reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Cretalamna [2] [9] | C. appendiculata |
| Teeth | An otodontid shark | |
Cretodus [9] | C. semiplicatus | Roanoke | 15 teeth | A mackerel shark | |
Cretoxyrhina [10] | C. vraconensis | Northeast Texas | Seven teeth | A mackerel shark | |
Leptostyrax [2] [9] | L. macrorhizus |
| Nine teeth | A mackerel shark | |
Paraisurus [2] [9] | P. compressus |
| Incomplete tooth | A mackerel shark | |
Protolamna [9] | P. roanokeensis | Roanoke | Teeth | A mackerel shark | |
Pseudohypolophus [2] | P. sp. | SMU locality 241 | A ray | ||
Squalicorax [2] [9] [11] [12] | S. aff. S. baharijensis | A tooth | An anacoracid shark | ||
S. pawpawensis | Teeth | An anacoracid shark | |||
S. priscoserratus | Teeth | An anacoracid shark | |||
S. volgensis | Roanoke | Teeth | Material reassigned to S. pawpawensis | ||
S. sp. | Teeth | Material reassigned to S. pawpawensis | |||
Arthropods reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Acanthaxius [13] | A. carinatus | Near Fort Worth | Several specimens | An axiid | |
Angulotergum [14] | A. milviformis | Salvation Army locality | Numerous specimens | A barnacle | |
Axiopsis [13] | A. pawpawensis | Near Fort Worth | One specimen | An axiid | |
A. sampsonumae | Near Fort Worth | One specimen | An axiid | ||
A. spinifera | Near Fort Worth | One specimen | An axiid | ||
Cenomanocarcinus [15] | C. vanstraeleni | Tarrant County | Several specimens | A cenomanocarcinid crab | |
Cretacoranina [16] | C. punctata |
| Approximately 260 specimens | A frog crab | |
Dawsonius [13] | D. tigris | Near Fort Worth | Several specimens | A ctenochelid | |
Diotascalpellum [14] | D. acies | Salvation Army locality | Multiple specimens | A barnacle | |
Feldmannia [2] [17] [18] | F. wintoni |
| Numerous specimens | An etyiid crab originally named as Xanthosia wintoni | |
Galathea [19] | G. cretacea | Watauga | One specimen | A squat lobster | |
G.? limonitica | South of Fort Worth | One specimen | A squat lobster | ||
Ivolepas [14] | I. worthensis | Salvation Army locality | Multiple specimens | A barnacle | |
Linuparus [2] | L. adkinsi | SMU locality 241 | A spiny lobster | ||
Marylyreidus [15] | M. punctatus | Tarrant County | 3 specimens | A lyreidid crab | |
Meticonaxius [13] | M. rhacheochir | Near Fort Worth | One specimen | A micheleid | |
Nephrops [19] | N. americanus | Fort Worth | Numerous specimens | A lobster | |
Nodosculda [20] | N. fisherorum | Near Fort Worth | Several specimens | A mantis shrimp | |
Paraxiopsis [13] | P. erugatus | Near Fort Worth | Several specimens | An axiid | |
P. texensis | Near Fort Worth | Several specimens | An axiid | ||
Raninella [2] | R. sp. | SMU locality 241 | A frog crab | ||
Xanthosia [2] [17] [18] | X. aspera |
| Several specimens | An etyiid crab | |
X. pawpawensis |
| 36 specimens | An etyiid crab | ||
X. reidi |
| 10 carapaces | An etyiid crab | ||
X. wintoni |
| Numerous specimens | Moved to the genus Feldmannia | ||
Bivalves reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Lima [2] | L. sp. | SMU locality 241 | A limid | ||
Lopha [2] | L. quadriplicata | SMU locality 241 | An ostreid | ||
Neithea [2] | N. sp. | SMU locality 241 | A neitheid | ||
Stearnsia [2] | S. robbinsi | SMU locality 241 | A crassatellid | ||
Texigryphaea [2] | T. washitaensis | SMU locality 241 | A gryphaeid | ||
Trigonia [2] | T. clavigera? | SMU locality 241 | A trigoniid | ||
Cephalopods reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Anisoceras [21] | A. armatum | 5 fragments | An ammonite | ||
Cantabrigites [21] | C. spinosum | Multiple specimens | An ammonite | ||
C. wenoensis | Multiple specimens | An ammonite | |||
Conlinites [21] | C. wrighti |
| Several hundred specimens | An ammonite | |
Engonoceras [2] [21] | E. serpentinum | Near Denison | Multiple specimens | An ammonite | |
E. sp. | SMU locality 241 | An ammonite | |||
Enigmaticeras [21] | E. riceae |
| 12 specimens | An ammonite | |
Ficheuria [21] | F. americana | East of Watagua | One specimen | An ammonite | |
F. pernoni | One specimen | An ammonite | |||
Flickia [21] | F. simplex | South of Rio Vista | One specimen | An ammonite | |
Hamites [21] | H. venetzianus | Keller | 7 fragments | An ammonite | |
Lechites [21] | L. (Lechites) comanchensis | Multiple specimens | An ammonite | ||
Mariella [21] | M. (Mariella) asper |
| Multiple specimens | An ammonite | |
M. (Mariella) worthensis |
| Multiple specimens | An ammonite | ||
Mortoniceras [21] | M. (Subschloenbachia) rostratum | South of Rio Vista | Internal mould | An ammonite | |
Neophlycticeras [21] | N. (Neophlycticeras) sp. | A single shell | An ammonite | ||
N. (Paradolphia) occidentalis | East of Watagua | A single shell | An ammonite | ||
Scaphites [21] | S. hilli | Fort Worth | Multiple specimens | An ammonite | |
Stoliczkaia [21] | S. (Lamnayella) worthense | Fort Worth | Several hundred specimens | An ammonite | |
S. (Shumarinaia) asiatica | 2 specimens | An ammonite | |||
S. (Stoliczkaia) clavigera | Fragments of phragmocone | An ammonite | |||
Tetragonites [21] | T. sp. | Northeast of Watagua | Internal mould | An ammonite | |
Worthoceras [21] | W. worthense | Multiple specimens | An ammonite | ||
Echinoderms reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Alkaidia [22] | A. sumralli |
| 36 fragments | A starfish | |
Altairia [22] | A. wintoni | Fort Worth | 6 specimens | A starfish | |
Asteroidea indet. [2] | Indeterminate | SMU locality 241 | A starfish | ||
Betelgeusia [22] | B. reidi |
| Hundreds of specimens | A starfish | |
Capellia [22] | C. mauricei | Fort Worth | Several specimens | A starfish | |
Crateraster [22] | C. texensis |
| Over 30 specimens | A starfish | |
Denebia [22] | D. americana |
| Numerous specimens | A starfish | |
Discocrinus [23] | D. catastomus | Multiple specimens | A crinoid | ||
Echinoidea indet. [2] | Indeterminate | SMU locality 241 | A sea urchin | ||
Fomalhuatia [22] | F. hortensae |
| Numerous specimens | A starfish | |
Goniasteridae indet. [22] | Unknown | Fort Worth | 3 marginal ossicles | A starfish | |
Poecilocrinus [2] [23] | P. dispandus | SMU locality 241 | A crinoid | ||
P. dispandus forma discus | Few specimens | A crinoid | |||
P. dispandus forma floriformis | Multiple specimens | A crinoid | |||
Roveacrinus [23] | R. morganae | Fort Worth | One specimen | A crinoid | |
R. proteus | Fort Worth | 32 cups | A crinoid | ||
Gastropods reported from the Paw Paw Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Turritella [2] | T. sp. | SMU locality 241 | A turritellid | ||